硬序羊茅 ying xu yang mao

Plant loosely tufted or single-stemmed; shoots intravaginal. Culms (30–)50–80(–110) cm tall, nodes 2. Leaf sheaths glabrous; auricles falcate; leaf blades flat, usually erect, 5–15(–25) cm × 2–6 mm, veins 10–14, glabrous; adaxial to abaxial sclerenchyma strands present, abaxial sclerenchyma in narrow discrete strands; ligule 0.3–0.5 mm. Panicle narrow, spikelike, 10–25 cm; branches stiff, erect, 1.2–3(–9) cm, 1(–2) at lowest node, bearing 2–4 spikelets from base. Spikelets 10–17 mm; florets (3–)4–6; glumes glabrous, apex acuminate; lower glume narrowly lanceolate, 5–7 mm; upper glume narrowly lanceolate, 6–8 mm; rachilla internodes 1.6–2.5(–3) mm; lemmas 6.5–9.5 mm, apex slightly notched; awns 6–13 mm; palea keels scabrid. Anthers 2.5–3.5 mm. Ovary apex glabrous. Fl. and fr. Jun–Oct.

* Roadsides, ditches; 1400–2600 m. Guizhou, Yunnan.

This species resembles Festuca gigantea in its falcate auricles, long awns, and glabrous ovary apex.